FALUN, SWEDEN - FEBRUARY 27: Petter Jr. Northug of Norway competes in the Men's 4 x 10km Cross-Country Relay during the FIS Nordic World Ski Championships at the Lugnet venue on February 27, 2015 in Falun, Sweden. (Photo by Mike Hewitt/Getty Images)
FALUN, SWEDEN - FEBRUARY 27: Petter Jr. Northug of Norway competes in the Men's 4 x 10km Cross-Country Relay during the FIS Nordic World Ski Championships at the Lugnet venue on February 27, 2015 in Falun, Sweden. (Photo by Mike Hewitt/Getty Images)